Finding the Fourth Proportional to 811,999,317.42, 1,120,559,887.35 and 440,721,425.34
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Solution
The fourth proportional to 811,999,317.42, 1,120,559,887.35 and 440,721,425.34 is: 608,196,017.09
Step by Step Solution
- Step 1: Write the proportion equation
811,999,317.42 : 1,120,559,887.35 = 440,721,425.34 : x - Step 2: Convert to fraction form
811,999,317.42/1,120,559,887.35 = 440,721,425.34/x - Step 3: Cross multiply
811,999,317.42x = 1,120,559,887.35 × 440,721,425.34 - Step 4: Simplify right side
811,999,317.42x = 493,854,750,731,721,792 - Step 5: Solve for x
x = 493,854,750,731,721,792/811,999,317.42 - Step 6: Final answer
x = 608,196,017.09
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.